Japan Minebea 42 stepper motor 2-phase 4-phase 4-wire line 6 32mm long axis
Model 17PU-H022-P3ST No. T1210-01
The 42 comes from the 42mm square size
Japan Minebea 42 stepper motor 2-phase, 4-phase Model is 17PU-H022-P3ST 6 wires, (two not used), 4-wire line Rated Current 0.5A Voltage DC 5-30V Torque claimed 2.9kg/cm 32mm long axis Electrical Inductance 23mH Specification: Voltage: 5V Phase Resistance: 6.4 Ohms Current: 0.5A Rated Speed 100-450RPM Step angle: 3.75° (turn around 96 steps) 360° Shaft Diameter 5mm/ 0.2" Weight: 228 g
28BYJ-48 Stepper Motor Teardown http://www.dailymotion.com/video/x2izzuo_28byj-48-stepper-motor-teardown_tech